hdfdreg.h revision 1.3
1/* $NetBSD: hdfdreg.h,v 1.3 1999/10/22 08:50:59 leo Exp $ */ 2 3/*- 4 * Copyright (c) 1991 The Regents of the University of California. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * @(#)fdreg.h 7.1 (Berkeley) 5/9/91 36 */ 37 38/* 39 * AT floppy controller registers and bitfields 40 */ 41 42/* uses NEC765 controller */ 43#include <dev/ic/nec765reg.h> 44 45/* 46 * The FDC in the Hades does not like multi-track mode! 47 */ 48#undef NE7CMD_WRITE 49#undef NE7CMD_READ 50#define NE7CMD_WRITE 0x45 51#define NE7CMD_READ 0x66 52 53#define NE7CMD_CONFIGURE 0x13 54#define NE7CMD_LOCK 0x94 55 56#define FD_IOBASE 0xfff00080 57#define FD_IOSIZE 0x80 58 59/* registers */ 60#define fdout 0x40 /* Digital Output Register (W) */ 61#define FDO_FDSEL 0x03 /* floppy device select */ 62#define FDO_FRST 0x04 /* floppy controller reset */ 63#define FDO_FDMAEN 0x08 /* enable floppy DMA and Interrupt */ 64#define FDO_MOEN(n) ((1 << n) * 0x10) /* motor enable */ 65 66#define fdsts 0x00 /* NEC 765 Main Status Register (R) */ 67#define fddata 0x02 /* NEC 765 Data Register (R/W) */ 68 69#define fdctl 0x60 /* Control Register (W) */ 70#define FDC_500KBPS 0x00 /* 500KBPS MFM drive transfer rate */ 71#define FDC_300KBPS 0x01 /* 300KBPS MFM drive transfer rate */ 72#define FDC_250KBPS 0x02 /* 250KBPS MFM drive transfer rate */ 73#define FDC_125KBPS 0x03 /* 125KBPS FM drive transfer rate */ 74 75#define fdin 0x60 /* Digital Input Register (R) */ 76#define FDI_DCHG 0x80 /* diskette has been changed */ 77 78#define FDC_BSIZE 512 79#define FDC_MAXIOSIZE NBPG /* XXX should be MAXBSIZE */ 80 81/* 82 * Copyright (C) 1992-1994 by Joerg Wunsch, Dresden 83 * All rights reserved. 84 * 85 * Redistribution and use in source and binary forms, with or without 86 * modification, are permitted provided that the following conditions 87 * are met: 88 * 1. Redistributions of source code must retain the above copyright 89 * notice, this list of conditions and the following disclaimer. 90 * 2. Redistributions in binary form must reproduce the above copyright 91 * notice, this list of conditions and the following disclaimer in the 92 * documentation and/or other materials provided with the distribution. 93 * 94 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY 95 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 96 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 97 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE 98 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 99 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT 100 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 101 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 102 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 103 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE 104 * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH 105 * DAMAGE. 106 * 107 * From: FreeBSD: Id: ioctl_fd.h,v 1.7 1994/10/30 19:17:39 joerg Exp 108 */ 109 110#define FD_MAX_NSEC 36 /* highest known number of spt - allow for */ 111 /* 2.88 MB drives */ 112 113#ifndef ASSEMBLER 114struct ne7_fd_formb { 115 int cyl, head; 116 int transfer_rate; /* fdreg.h: FDC_???KBPS */ 117 118 union { 119 struct fd_form_data { 120 /* 121 * DO NOT CHANGE THE LAYOUT OF THIS STRUCTS 122 * it is hardware-dependant since it exactly 123 * matches the byte sequence to write to FDC 124 * during its `format track' operation 125 */ 126 u_char secshift; /* 0 -> 128, ...; usually 2 -> 512 */ 127 u_char nsecs; /* must be <= FD_MAX_NSEC */ 128 u_char gaplen; /* GAP 3 length; usually 84 */ 129 u_char fillbyte; /* usually 0xf6 */ 130 struct fd_idfield_data { 131 /* 132 * data to write into id fields; 133 * for obscure formats, they mustn't match 134 * the real values (but mostly do) 135 */ 136 u_char cylno; /* 0 thru 79 (or 39) */ 137 u_char headno; /* 0, or 1 */ 138 u_char secno; /* starting at 1! */ 139 u_char secsize; /* usually 2 */ 140 } idfields[FD_MAX_NSEC]; /* 0 <= idx < nsecs used */ 141 } structured; 142 u_char raw[1]; /* to have continuous indexed access */ 143 } format_info; 144}; 145#endif /* ASSEMBLER */ 146 147/* make life easier */ 148# define fd_formb_secshift format_info.structured.secshift 149# define fd_formb_nsecs format_info.structured.nsecs 150# define fd_formb_gaplen format_info.structured.gaplen 151# define fd_formb_fillbyte format_info.structured.fillbyte 152/* these data must be filled in for(i = 0; i < fd_formb_nsecs; i++) */ 153# define fd_formb_cylno(i) format_info.structured.idfields[i].cylno 154# define fd_formb_headno(i) format_info.structured.idfields[i].headno 155# define fd_formb_secno(i) format_info.structured.idfields[i].secno 156# define fd_formb_secsize(i) format_info.structured.idfields[i].secsize 157